This European Standard is an index test used to determine the efficiency with which a geotextile or geotextile-related product will protect a geosynthetic barrier or other contact surface against the mechanical long term effects of static point loads. The test is performed on the geotextile or geotextile-related product in isolation. It measures the strains experienced by a geotextile or geotextile-related product in contact with a deformable pad. NOTE Other properties relevant to the protection of geosynthetic barriers against differing actions are covered by other standards, e.g. dynamic perforation is covered in EN 918. A related performance test simulating specific site conditions is described in annex B.